221012023312001 has 32 divisors (see below), whose sum is σ = 227353191690240. Its totient is φ = 214794163584000.

The previous prime is 221012023311923. The next prime is 221012023312043. The reversal of 221012023312001 is 100213320210122.

It is a cyclic number.

It is not a de Polignac number, because 221012023312001 - 2²² = 221012019117697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012023312501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889772315 + ... + 890020671.

It is an arithmetic number, because the mean of its divisors is an integer number (7104787240320).

Almost surely, 2^{221012023312001} is an apocalyptic number.

It is an amenable number.

221012023312001 is a deficient number, since it is larger than the sum of its proper divisors (6341168378239).

221012023312001 is a wasteful number, since it uses less digits than its factorization.

221012023312001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249305.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221012023312001 its reverse (100213320210122), we get a palindrome (321225343522123).

The spelling of 221012023312001 in words is "two hundred twenty-one trillion, twelve billion, twenty-three million, three hundred twelve thousand, one".